For iOS and Android, the instructions are slightly different. Please see below for both.
For iOS Devices:
To delete an account within the application, you’ll need to:
Open the main menu (the three-line button in the top-left corner).
Select My Account.
Tap Delete at the bottom of the page, and confirm account deletion.
👉 Note: Deleting your account does not cancel your subscription. To stop future charges, cancel the subscription in your Apple ID settings.
For Android Devices:
Our app does not currently support in-app account deletion. The subscription is linked to your Google Play account, and projects saved in the app are tied to your specific device.
If you purchased a subscription, cancel it in the Google Play app under Payments & Subscriptions → Subscriptions.
Projects stored on your device will be removed automatically when you uninstall the app.